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JavaScript Application Cookbook [Paperback]

Jerry Bradenbaugh
3.2 out of 5 stars  See all reviews (18 customer reviews)
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Product Description

From Amazon

Seasoned Java coders will find the JavaScript Application Cookbook compiled just for them. Written in the same vein as the old-style programmer "toolbox" titles, this book sheds the usual tutorial presentation and simply introduces a series of JavaScript applications you can use on your own sites.

The cookbook begins with recipes such as a client-side search engine application that facilitates complex database searching to maximize local processing. (An interactive multiple-choice testing application follows, along with code for an interface to multiple search engines on the Net). Other applications include a JavaScript shopping cart, context-sensitive help, cipher implementation, drag-and-drop-capable e-mail, and a cookie-based user-management system.

Author Jerry Bradenbaugh clearly has a passion for JavaScript, and he illustrates the capabilities of this modest scripting language. The code for the book's applications is available from the publisher's Web site, and each chapter begins with a step-by-step walk-through of the finished application. You'll learn how code works and get ideas for possible extensions you might want to create. If you're programming in JavaScript already and want to grow your arsenal of tools and techniques, the JavaScript Application Cookbook is an immediate code fix. --Stephen W. Plain

Review

This book attains the usual high standards of O'Reilly books with clear,entertaining writing and a good presentation. -- Robert Judd, Front Range Unix Users Group, 11 March 2002

From the Publisher

JavaScript Application Cookbook literally hands the Webmaster a set of ready-to-go, client-side JavaScript applications with thorough documentation to help them understand and extend the applications. By providing such a set of applications, JavaScript Application Cookbook allows Webmasters to immediately add extra functionality to their Web sites.

About the Author

Jerry Bradenbaugh is a senior Web application developer and technical lead in Los Angeles, California. His Web site, HotSyte-The JavaScript Resource, has been around since the early days of JavaScript, making it one of the oldest JavaScript resources on the Net. He has contributed in developing enterprise applications for Netscape and First Union National Bank.

Excerpt. © Reprinted by permission. All rights reserved.

Chapter 9 - Ciphers in JavaScript

Application Features
Message Encryption Application Using Multiple Ciphers
Object-Oriented Design Makes Adding Ciphers Easy
Entertaining Application and Utility for Your Visitors
JavaScript Techniques
Assigning Methods to Your Objects
More String Matching and Replacing
Tapping into JavaScript Object Inheritance
Using Alternate Syntax

If you just finished the previous chapter, this one will give your brain a little breather. This chapter is lighter and deals with an application based on pure, simple fun--ciphering techniques with JavaScript. The application jumbles text messages into what seems like a bunch of junk, meaningful only to those who possess the key to reveal its secret.

This interface displayed in Figure 9-1 is fairly simple. With the Caesar cipher selected, it's just a paragraph describing the cipher, a select list used to choose a number key, and a text area to enter text to encipher and decipher.

The text "JavaScript is the scripting language of choice across the planet, don't you agree?" is entered in the text area. Selecting 6 from the Shift list, then choosing the "Encipher" button yields the scrambled text you see in Figure 9-2.

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